EXAMPLE 1
Evaluate inverse trigonometric functions
Evaluate the expression in both radians and degrees.
3
( –
)
c.
tan
–1
√
SOLUTION
c.
When
–
<
θ
<
, or
– 90°
<
θ
< 90°
, the
angle whose tangent is
–
is:
π
2
π
2
√
3
( –
)
tan
–1
3
√
θ
=
π
3
–
=
( –
)
tan
–1
3
√
θ
=
–60°
=